Door-assembling machine.



Nl l) W. F. OHLRAU.

DOOR ASSEMBLNG MACHINE.

APPLIOATION FILED AUG.19,1912.

'HI III [HI HD Il Il II HI '.LUMlA PLAOGRAPH co., WASHINGTON, n. c.

W. P. OHLRAU.

DOOR ASSEMBLING MACHINE.

APPLICATION FILED AUG.19, 1912.

Patented Aug. 12, 1913.

6 SHEETS-SHEET Z.

NOGRAPH co.. WASHINGTON, u. c,

W. F. DHLRAU.

DOOR ASSEMBLING MACHINE..

APPLzoATIoN FILED AUG.19, 1912.

LUS. Patented Aug. 12, 1913.

s sHBBTssHEBT s.

COLUMBIA PLANonn/wn co,.w^smNoroN, n. c.

Patented Aug. 12, 1913.

5 SHEETS-SHEET 4.

5MG/wko@ @www I I @uw w. Q www W. F. OHLRAU.

DOOR ASSBMBLXNG MACHINE.

APPLIGATIQN FILED AUG.19, 1912.

Patented Aug. 12, 1913.

5 SHEETS-SHEBT 5.

TNTTED STATES PATENT FFTE.

WILLIAMF. OHLRAU, F ALBUQUERQUE, NEWIVIEXICQ Specification of Letters Patent.

lPatentedAug. 12,1913..

Application filed August 19, 1912. Serial No. 715,801.

Dlexico, have invented certain new .and useful Improvements inDoor-Assembling Machines, of which the following isafull and Clear specification, reference beinghad'to the accompanying drawings, in which- Figure 1 is a front elevation of the machine complete, a part of a `door partly fassembled being shown in position inthe machine; Fig. 2 a view of o-neend ofthe-machine; Fig. 3 a verticalsectionalview;.Fig. et is a horizontal sectional view ylooking downwardly, this sect-ionbeing takenapproximately on theline of Fig.12;.Fig. 5 a detail side elevation of thezupper end of one of the end clamps or .ab'utments ,.Fig. 6 a horizontal section through Vthe ysame showing one ofthe stilebuffers; Fig. 7 a horizontal sectional view` of thel end cla-mp or buffer showing one of the end-rail abutments; Fig. S a plan view in detail. ofthe double cam arrangementfor actuating the cnd clamps; Fig. 9 .anv edge elevation of the same partly in vertical sect-ion;Figs..10-and 1l detail views showing the mechanism for tilting or ejecting'the completely assembled door; and Figs. 12 and ldetail v-iews of one of the arms employed forautoniatically alining the inuntings.

v.This inventionhas relationto the type of'machine coveredbythe cofpending application Serial Number 662,650,1iled Noveniber 27, 1911, applied-for in the name of myself andGeorgeK. Neher,the machine being adapted to receivea looselytassembled door and to perform certain operations thereon whereby the loosely assembled members are not only clamped and-hammered tightly together but are also properly squared, the product ofthe machine! being a completely manufactured door'rea'dy for the market.

The objects of the present improvements vare to improve the mechanism for `exerting endwise pressure on the door and alsoto provide simple means whereby the-,door is tilted forwardly or ejected from the machine after the door is completed thereby enabling the attendants to more quickly .get ythe door out of the way ofthe door that is to be-next inserted iii/the machine,.-as more fully hereinafter set forth.

A still further object of the inveiitionis machine a the A door.

LI, in thepresent machine,

yend pressure on the door,

to provide vsimple vmeans-whereby the operation ofzbracing yand hammering the stiles ofthe 4doorinto position will at the saine time .ali-ne centrally of the doorthe muntv'ing rails, as more-fully hereinafter set forth.

The machine illustrated in the .annexed drawings is constructed and operated substantially in-the same manner as the machine .described `and illustrated inthe patent hereinbefore.named and Itherefore do not 'deem it necessary todescribeithe 'construction of the machine'in detail.

.The letter o .designates'the drive shaft .journaled inthe yframe 7) of the machine, .which vdrive shaft isbelte'd upA toA a counter shaft c, which shaft c in turn geared to a horizontal shaft CZ. by means of a pinion e and a gear f. This shaft f drives theham- `mer shaft/g through themedium of a pair of pi-iiionsfhanda pair of` gears z'. vThe shaft .g .isprovided with the hammer lifting tap- .y pets j which engagethe-hooked ends of the springwactuated hammers 7c, which hammers vare adapted to strike againstthe hammer :rail or bar Z mounted slidably on the backwardly-incliniirg .faceof the frame ofthe Suitablevrest pins m rigidly vattachedv to thef gears z' serve to reciprocate the cams-.n attached tothe hammer rail, Aand .the hammer-rail'lfis rigidly but adjustably connected yto -the bar `or `rail 0, slidably .mounted on.the facenofthe.machine and .adapted to cooperate with the baserail p of the machine` to exert the necessaryA clamping pressureA on theedge rails A lor stiles of The 4connections between .the upperzpressure rail 0 and the hammer rail Z consistof threaded bars-f] andsuitable Vgearing-foi' rotating the sainefor the pur- .pose of raising orlowering the pressure rail 0 `with'referenceto the-hammer rail to :accommodate doors of yvarious widths.

Upon thebase railp is mounted the upright end clamps a" but instead of having one of. these end clamps rig-id and the otherv movable, sas in the patented machine referred to, arrange to have both these end clamping membersslidable on the base bar -and I prov-ide suitable mech- Aanism for simultaneously actuating these end simultaneously exert thishaving been foundin practiceto-result in morev quickly clamps so that they yand more effectively exerting the necessary end pressure on the door. vl may-employ yany suitable mechanism for thus simultaneously actuating both end clamps but I prefer a mechanism which is a duplication of the mechanism shown in the prior patent mentioned. This mechanism consists essentially of a pair of cams s mounted one above the other at the center of the base of the machine, each cam being provided with a horizontal guiding bar t and being connected by an. arm u and a nut o to an adjusting screw w, this adjusting screw being swivelly mounted in the adjacent one of the end clamp members 1 and serving to enable the end clamping members to be adjustable for doors of different lengths. Between the cams s is mounted a double armed lever v which is fixed rigidly to a vertical shaft y, said double armed lever being provided with oppositely projecting roller-carrying wrist pins e, whereby when the shaft fy is rotated the cams will be simultaneously reciprocated in opposite directions. Suitable rods a connect the bracket arms u with the horizontal bars t for the purpose of bracing the same. The vertical shaft jl/ is suitably journaled in the frame of the machine and is driven by bevel gears 7) from the hammer shaft g.

At the upper end and at the lower end of each of the end clamps r is a spring actuated buffer c', these buffers being so positioned that when the end clamps are brought forward into clamping action the buffers will strike against the ends of the respective stiles of the door and serve to properly position them with respect to the other constituent members of the door. These buffers may be constructed in any suitable manner; I have shown them as being each provided with a tubular stem which works in a recess formed in the face of the upright part of the clamping member, a coil spring d being inclosed to normally project the buffer and a set screw f being employed to prevent the spring ej ecting the buffer from the clamping member. In addition to these buffers each clamping member is provided with a pair of pressure blocks g mounted on the face of the upright part of the clamping member and positioned so as to bear against the end rails of the door when the clamping members are brought into action. These pressure blocks are vertically adjustable with respect .to each other so that they may be arranged to operate upon doors having endrails of different lengths; the adjusting means shown consists of a screw L mounted on an ear or wing z" carried by the pressure block` said screw being adapted to enter any one of a vertical series of holes j formed in the face of the end clamp.

As shown the most convenient position for operating upon the door is a position in which the door inclines upwardly and backwardly, but in this position the completed door is in an inconvenient position for ready removal by the attendant and I have therefore provided means whereby when the door is completed it may be tilted forwardly at its upper edge far enough to either cause it to fall outwardly upon the floor in front of the machine or to a stand in a practical upright position where it will be convenient for removal by the attendant. For this purpose I pivotally mount upon a horizontal frame bar 7u', in the center of the machine, an upright frame Z provided with a horizontal roller m at its upper end and a curved cam bar n on its rear side. In its normal position this frame tilts backwardly so as to be out of the way of the door when it is placed in the machine, this position of the frame being maintained by a suitable stop or other device 0. In horizontal alinement with the cam n is a horizontal arm 7) provided at its extreme end with a roller g and rigidly mounted on the aforesaid vertical shaft y. These parts are so proportioned and timed that upon the completion of the clamping action on the door members the arm 79 will sweep around back of the frame l and strike against the cam n forcing the frame Z forwardly far enough to tilt the upper edge of the door outwardly to the desired angle, where it will either fall forwardly out of the machine on the floor or will be in a position where the attendant may conveniently remove it from the machine.

rlhe letter 1 designates a rock shaft supported in suitable bearings on the face of the upper clamp rail 0 and having attached to it at suitable intervals a series of radial. arms s whose outer ends carry each a shoe 25', this shoe being swiveled to the extremity of the arm and being provided with a horizontal bar u along its outer edge. Vhen the shaft r is rocked forwardly the shoes t will be brought down so as to rest on the panels of the door, so that when the pressure rail 0 is forced downwardly the shoes will bear against the muntings and thus forcibly shove the muntings into central alinement when the clamp rail 0 is forced downwardly into action. In action the horizontal bars fu. of the shoes bear against the longitudinal molded edges of the muntings, and it is preferable to provide four of these alininp arms, two for each of the munting rails. The inner longitudinal corners of the bars u are preferably rounded off to fit the mold-ed corners of the muntings, and these bars u are made removable by means of a bolt o so that bars adapted to different moldings may be interchanged.

To enable the radial arms to be adapted to doors and muntings of different widths, each one of the arms is made extensible in any suitable manner, preferably as shown, namely, by making each arm of two rods and threading or tapping one axially into the other, a nut fw being employed to lock l the parts in their adjusted positions. To enable these inunting aliiiing arms to be longitudinally adjustable w-ith respect to each other to thus providefor adapting them to doors and inuntings of various lengths, the bearing block a, of each arm is slidably mounted on the face of the i'ailo and-is locked in its adjustable position by a pair of bolts y. Each of these'bearing blocks is provided with tongues z which work in undercut recesses or channels in theface of the bar 0 and thus hold the bearing blocks against the face of said bar 0 and yet permit the same to be slid along the bar.

At one end of the shaft r is aifixed a rearwardly extending arm a2 to the end of which is fastened a weight b2, which serves to normally rock the shaft r/ rearwardly and thus swing the aliiiiiig arms upwardly out of the way, as shown in full lines in 1. llVhen however the rock shaft fr is 'turned far enough to bring the alining arms down upon the face of the door, as shown in dotted lines at the right-haiid end of Fig. 1, the weight b2 will be brought to a position in front of a vertical plane drawn through the center of the rock shaft 1" and the weight will thus serve to normally hold the aliniiig arms against the face of the door. Any suitable means may be provided for swinging the arms into this operative position; I have shown a simple hand lever c2 for this purpose. To swing the alining arms upwardly out of the way after the door is completed this lever c2 may be employed or, which is preferable, the parts may be so proportioned that when the ejecting or tilting frame Z/ is thrown forward to tilt or eject the door this action will be suiiwicient to throw the aliniiig arms far enough forwardly to bring the elevating weight b2 back of the center and thus enable the gravitation of the weight to automatically swing the alining arms up out of the way.

rIhis machine may be stopped manually or automatically. For manually stopping it I provide a slidable rod (Z2 which is connected by a lever e2 to a suitable clutch on the drive shaft a. Should it be desired to stop the machine automatically, that is, after the coinpletioii of each cycle of operations, I provide this bai' (Z2 with a vertical pin f2 which depends into the path of a radial finger (l2 carried by the vertical shaft y, so that after the ejecting arm p has operated, the finger g2 will strike against the pin f2 and thus automatically cause the clutch to be disengaged. lVhen it is not desired that the machine shall be thus stopped automatically the pin f2 may be removed from its supporting rod (Z2, and for conveniently holding this pin when thus put out of use I provide a supplemental hole 71,2 in the clutch shifting rod (Z2. Having thus described my invention, what .I claim asnew and desire to secure by Letters Patent, isF

l. rIn. combination with a door `assembling machine, in which the door is in anapproximately upright position when completed,` of means automatically actuated by the clamping and squaring actuating:mechanism for tilting the upper edge of the door forwardly out'froin between the clamping and squaring devices.

'2. `In combination with a door lassembling machine, in which the door is in an approximately upright position when completed, of means automatically actuated by the clamping and squaring actuating mechanism for tilting the upper edge of the door forwardly out from between the clamping and squaring devices, said means embodying a tiltable frame and a device for actuating the saine.

3. :In combination with a door assembling yni aehine, in which the door is in an approxivmately upright position when completed, of

means Aautomatically actuated by the clamping and squaring actuating mechanism for tilting the upper edge of the door forwardly out'gtrom between the clamping and squaring devices, said means consisting of a tiltablefraine carrying a rollerfor impinging against the door and a cam mechanism for actuating said tilting frame.

4t. In a machine of the class set forth, clamping members and means for forcing them against the longitudinal edges of the door, and means operable simultaneously therewith for similarly engaging and centrally aliiiing the inunting rails of the door.

5. In a machine of the class set forth, clamping and squaring members engaging the edges of the door, means for operating said members, and means operated siinultaneously therewith acting to centrally aline the munting rails of the door, said means consisting of a series of arms carried by one of the clamping members and extending over upon the face of the door.

6. In combination with a machine embodying means for clamping and squaringy the members of the door, of means for simultaneously centrally aliiiing the munt-ing rails of the door, said means consisting of a series of arms carried by one of the clamping members of the machine, said arms being provided with pressure shoes and being extensible as to length.

7. In combination with a machine einbodying means for clamping and squaring the members of the door, of means for simultaneously centrally aliniiig the inunting rails of the door, said means consisting of a series of arms carried by one of the clamping members of the machine, said arms being bodily adjustable with respect to each other for the purpose set forth.

8. In combination with a machine embodying means for clamping and squaring ISO the members of the door, of means for si-y multaneously centrally alining the munting rails of the door, said means consisting` of a rock shaft journaled on one of the clamping` members and a series of arms carried thereby.

9. In combination with a machine embodying means for clamping and squaring the members of the door, of means for simultaneously centrally alining the munting rails of the door, said means consisting of a rock shaft. journaled on one of the elamping members and a series of arms carried thereby, said rock shaft being provided with a device tending normally to hold the arms out of action.

l0. In combination with a machine for clamping` and squaring doors, means being provided for holding' the doors in an upwardly and backwardly inclined position while being clamped and means being also provided for automatically tilting the door forwardly when the clamping and squaring` are completed, of a series of dependingmunting alining arms, means to normally hold the arms against the front face of the panels of the door, said arms being carried by a rock shaft, whereby when the completed door is tilted outwardly said arms will be swung upwardly out of the way.

ll. In a machine for clamping and squaring doors, the combination of a frame, a base rail mounted thereon and adapted to support the partly assembled door and to serve as one of the side edge clamping memclamping members slidably mounted on said 40 base rail, and means for simultaneously reciprocating these end members back and forth on said base rail.

12. In a machine of the class set forth,

clamping members adapted to engage the top and bottom rails of the door, clamping members adapted to engage the side edges of the respective stiles of the door, a spring actuated buffer mounted on each end of the end clamping members in alinement with the door stile, whereby when the end clamping members are brought into action these buffers will engage the ends of the stiles and properly position them.

In testimony whereof I hereunto aiX my signature in the presence of two witnesses.

WILLIAM F. OI-ILRAU. lVitnesses JosEPi-r HANsKY, WM. W ILooX.

M Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

